Factors That Affect Dissolving

Stirring a solution makes solid dissolve faster.

• True

• False

Heating a solution makes solutes ___________ faster.

• dissolve

• to become solid

Tags

NGSS.MS-PS1-4

Heating makes solid dissolves faster because heat speeds up the particles and allows to spread through the solution more easily.

• True

• False

Tags

NGSS.MS-PS1-4

Smaller grains dissolve faster than larger grains.

• True

• False

Match the following

• exposure

• Higher temp = higher rate of dissolution = higher ____

• kinetic energy

• More _____ = more exposure = faster rate of dissolution

• movement

• more surface area = more ____ = increased rate of dissolution

Tags

NGSS.MS-PS3-4

Match the following scenarios with their effects on the rate of dissolution.

• Using a solvent at constant temperature

• It decreases

• Changing the solvent temperature from low to high

• It increases

• Heating the solvent

• It remains the same

• Cooling the solvent

• It first decreases, then increases

Tags

DOK Level 2: Skill/Concept

The grain size of a solute do not affects the rate at which it will dissolve in a liquid.

• True

• False

What are two ways to speed up the rate of dissolving a solute in water?

• Increase temperature and stir.

• Cool the solution and let it sit still.

• Decrease temperature and add more solute.

• Use a larger container and avoid stirring.

How does stirring a solution affect the rate of dissolution?

• It slows down the dissolving process.
  

• It does not affect the rate.

• It removes solute from the solution.

• It increases the rate of dissolution.

What is the role of surface area in dissolving a solute?

• Smaller surface area speeds up dissolution.

• Larger surface area slows down dissolution.

• Larger surface area speeds up dissolution.

• Surface area has no effect.